WO2019214276A1

WO2019214276A1 - Reflector adjustment mechanism and projection device applying the same

Info

Publication number: WO2019214276A1
Application number: PCT/CN2019/070532
Authority: WO
Inventors: 陈永壮
Original assignee: 深圳光峰科技股份有限公司
Priority date: 2018-05-09
Filing date: 2019-01-05
Publication date: 2019-11-14
Also published as: CN110471247A; CN110471247B

Abstract

A reflector adjustment mechanism comprises a fixing support (100), a first adjustment member (300), a second adjustment member (200), and a fixing screw (230) that matches fixing holes (201, 202). The fixing support (100) is used to mount a reflector (400). The first adjustment member (300) is provided with a first fixing contact (301), and the first adjustment member (300) is connected to the fixing support (100). The second adjustment member (200) has two second fixing contacts (240) that are separated from each other. The second adjustment member (200) is provided with the fixing holes (201, 202) and adjustment holes (203, 204), and the adjustment holes (203, 204) are strip-shaped holes. The fixing screw (230) is used to detachably fix the second adjustment member (200) to the fixing support (100). The reflector adjustment mechanism uses the adjustment holes (203, 204) to precisely adjust the longitudinal and lateral position of the fixing contact (240) on the second adjustment member (200), such that the position and the angle of the reflector (400) are changed. A projection device (10) applying the reflector adjustment mechanism enables quick and easy adjustment of the reflector (400).

Description

Mirror adjusting mechanism and projection device applying the same

Technical field

The present invention relates to the field of projector technologies, and in particular, to a mirror adjustment mechanism and a projection device using the same.

Background technique

The projector is currently widely used in offices and homes, and is an optical instrument that uses optical components to magnify the contour of a workpiece and project it onto a screen. The mirror is included, and the position of the mirror needs to be adjusted during assembly and use. The existing adjustment mechanism has the problems of difficulty in operation and complicated structure, and is inconvenient to operate.

Summary of the invention

It is an object of the present invention to provide a mirror adjustment mechanism that is simple to operate and that makes mirror adjustment easy to operate.

Another object of the present invention is to provide a projection apparatus in which the above-described mirror adjustment mechanism is mounted, which can easily realize the adjustment of the mirror.

Embodiments of the invention are implemented as follows:

A mirror adjustment mechanism includes: a fixing bracket, a first adjusting member, a second adjusting member, and a fixing screw matched with the fixing hole. The mounting bracket is used to mount the mirror. The first adjusting member is provided with a first fixed contact, and the first adjusting member is connected to the fixing bracket. The second adjusting member has two second fixed contacts separated from each other; the second adjusting member is provided with a fixing hole and an adjusting hole, and the adjusting hole is a strip hole. The fixing screw is used for detachably fixing the second adjusting member to the fixing bracket.

In a part of the embodiment of the invention, the adjustment hole comprises a first adjustment hole and a second adjustment hole, the longitudinal direction of the first adjustment hole being parallel to the longitudinal direction of the second adjustment hole.

In some embodiments of the invention, the two fixed contacts of the second adjustment member are located between the first adjustment aperture and the second adjustment aperture.

In some embodiments of the invention, the first adjustment aperture and/or the second adjustment aperture are waist apertures.

In a part of the embodiment of the present invention, the second fixed contact comprises a holding member, the holding member has a card slot for holding the mirror, and the holding member is connected to the second adjusting member, and the two card slots are flush.

In some embodiments of the present invention, the second adjusting member is provided with a positioning slot, and the opening of the card slot corresponds to the position of the positioning slot.

In some embodiments of the invention, the first fixed contact is a resilient stop.

In some embodiments of the present invention, the adjustment rod further includes an adjustment rod that has an eccentric shaft, and the fixing bracket is provided with a positioning hole that cooperates with the eccentric shaft.

In some embodiments of the invention, the adjustment rod includes a first portion and a second portion that are interconnected, the ends of the first portion and the ends of the second portion being each provided with an eccentric shaft.

A projection device includes a mirror and the mirror adjustment mechanism described above.

The mirror adjustment mechanism of the present invention and the projection apparatus using the adjustment mechanism have the following effects: the mirror adjustment mechanism performs front, rear, left, and right positions on the position of the fixed contact on the second adjustment member through the adjustment hole. Accurate adjustment, which in turn achieves changes in mirror position and angle. The projection device of the adjustment mechanism can realize quick and easy adjustment of the mirror.

Other features and advantages of the invention will be set forth in part in the description in the written description The objectives and other advantages of the invention may be realized and obtained by means of the structure particularly pointed in the appended claims.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments will be briefly described below. It should be understood that the following drawings show only certain embodiments of the present invention, and therefore It should be seen as a limitation on the scope, and those skilled in the art can obtain other related drawings according to these drawings without any creative work.

1 is a schematic structural diagram of a projector according to an embodiment of the present invention;

2 is a schematic diagram of a split structure of a projector according to an embodiment of the present invention;

3 is a schematic structural view of a second adjusting member according to an embodiment of the present invention;

4 is a schematic structural view of a second fixed contact provided by an embodiment of the present invention;

FIG. 5 is a schematic structural view of an adjustment rod provided by an embodiment of the present invention.

LIST OF REFERENCE NUMERALS: 10-projector; 100-fixing bracket; 101-first blind hole; 102-positioning hole; 110-bottom wall; 111-mounting groove; 120-first side wall; 130-second side wall; 131-second chute; 200-second adjusting member; 201-first fixing hole; 202-second positioning hole; 203-first adjusting hole; 204-second adjusting hole; 211-center plate; 212- a gusset; 213-second gusset; 220-positioning groove; 230-fixing screw; 240-second fixed contact; 241-clamping member; 242-card slot; 300-first adjusting member; a fixed contact; 400-mirror; 500-adjusting rod; 501-eccentric shaft; 510-first portion; 520-second portion.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. The components of the embodiments of the invention, which are generally described and illustrated in the figures herein, may be arranged and designed in various different configurations.

Therefore, the following detailed description of the embodiments of the invention in the claims All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be noted that similar reference numerals and letters indicate similar items in the following figures, and therefore, once an item is defined in a drawing, it is not necessary to further define and explain it in the subsequent drawings.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "front", "back", "vertical", "inside", "outside", etc. indicate the orientation or The positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is conventionally placed when the invention product is used, for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device. Or the components must have a particular orientation, are constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention. Moreover, the terms "first", "second", "third", and the like are used merely to distinguish a description, and are not to be construed as indicating or implying a relative importance.

Moreover, the terms "horizontal", "vertical", and the like do not mean that the component is required to be absolutely horizontal or overhanging, but may be slightly inclined. For example, “horizontal” simply means that its direction is more horizontal than “vertical”, and does not mean that the structure must be completely horizontal, but may be slightly inclined.

In the description of the present invention, it should be noted that the terms "set", "connected", and "connected" should be understood broadly, and may be, for example, a fixed connection or a The connection is disassembled or connected integrally; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be internal communication between the two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

Example

The present embodiment provides a projector 10 including a mirror 400 and a mirror 400 adjustment mechanism, wherein the mirror 400 is mounted in the mirror 400 adjustment mechanism, it should be understood that the projector 10 further includes other components such as a casing, The other parts of the projector 10 are not the focus of the present invention, and are not shown in the drawings. Those skilled in the art can implement the present invention with reference to the prior art, and no further details are provided herein.

Mirror 400 is used to reflect light and can project a larger picture at a shorter distance. In the embodiment, the mirror 400 is a plane mirror.

1 and 2, the mirror 400 adjustment mechanism in this embodiment includes a fixing bracket 100, a first adjusting member 300, a second adjusting member 200, an adjusting screw, and an optional adjusting rod 500. The fixing bracket 100, the first adjusting member 300 and the second adjusting member 200 define a mounting space for mounting the mirror 400, and the mirror 400 is installed in the mounting space. The function of the adjustment lever 500 is to adjust the position of the first adjustment member 300 and/or the second adjustment member 200 by an external force, which is not necessary in some embodiments.

In this embodiment, the fixing bracket 100 is a substantially frame type structure, wherein the fixing bracket 100 includes a bottom wall 110, a first side wall 120 and a second side wall 130, and the first side wall 120 and the second side wall 130 are respectively connected Both ends of the bottom wall 110 have a substantially U-shaped structure, and the bottom wall 110 is provided with a mounting groove 111 facing the opening side of the U-shaped structure, and the mounting groove 111 is for receiving the first Adjustment member 300. The first sidewall 120 is provided with a first sliding slot (not shown), and the second sidewall 130 is provided with a second sliding slot 131. The first sliding slot and the second sliding slot 131 are oppositely disposed to form a mirror 400 for sliding in. Or slide out the track of the installation space. A first blind hole 101 and a positioning hole 102 are disposed at an end of the first sidewall 120 and the second sidewall 130 away from the bottom wall 110. The first sidewall 120 is provided with a first blind hole 101 and a positioning hole 102. The second sidewall 130 is provided with a first blind hole 101 and a positioning hole 102.

The first adjusting member 300 is provided with a strip-shaped structure, and the first adjusting member 300 is provided with a first fixed contact 301. The first fixed contact 301 is located at a middle portion of the first adjusting member 300, and the first fixed contact 301 is used for the mirror. 400 contacts, and the angle of the mirror 400 is adjusted by the change of the position of the first fixed contact 301. The first adjusting member 300 is connected to the fixing bracket 100. In this embodiment, between the first adjusting member 300 and the fixing bracket 100 is The two ends of the first adjusting member 300 are detachably connected to the mounting groove 111 by screwing.

Please refer to FIG. 1 and FIG. 2 . As an example, the first fixed contact 301 is a resilient baffle integrally formed on the first adjusting member 300 and facing the mounting space of the first adjusting member 300 . The direction of the elastic flap extends away from the first adjusting member 300 and protrudes from the mounting groove 111 and abuts against the mirror 400. In some embodiments, the structure of the first fixed contact 301 may also be other structures such as a clip type. In practical applications, in order to protect the mirror 400, the first fixed contact 301 and the mirror 400 are The contact surface may also be provided with a cushioning structure, such as a resilient pad for forming a cushion to prevent damage to the mirror 400 during adjustment of the mirror 400.

Referring to FIG. 3, the second adjusting member 200 is a plate-like structure, and is a sheet metal member, and has a symmetrical structure along the central portion of the second adjusting member 200. Specifically, the second adjusting member 200 includes a center plate 211 and a first gusset. 212 and the second gusset 213, wherein the first gusset 212 and the second gusset 213 are integrally formed and connected to the end ends of the center plate 211 to form a planar structure, the first gusset 212 and the second gusset 213 is located on the same side of the center plate 211, the first gusset 212 and the second gusset 213 are symmetrically arranged, and the structures of the first gusset 212 and the second gusset 213 are respectively the same as the first sidewall 120 and the first of the fixing bracket 100 The two side walls 130 cooperate.

The center plate 211 is provided with a positioning groove 220. The positioning groove 220 is opened in the same direction as the center plate 211. The size of the positioning groove 220 is slightly larger than the size of the mirror 400 so that the mirror 400 can extend through the positioning groove 220.

The second adjusting member 200 is provided with a fixing hole and an adjusting hole, wherein the fixing hole functions to detachably fix the second adjusting member 200 to the fixing bracket 100, and the second adjusting member 200 is opposite to the fixing bracket 100. The location can be changed. In this embodiment, the fixing hole includes a first fixing hole 201 and a second fixing hole 202. The first fixing hole 201 and the second fixing hole 202 are both through holes. The first fixing hole 201 is opened in the first gusset 212. The second fixing hole 202 is defined in the second gusset 213. In some embodiments, the first fixing hole 201 and the second fixing hole 202 are respectively opened in the symmetrical form on the first gusset 212 and the second gusset 213. The first fixing hole 201 and the second fixing hole 202 may each be a circular hole, a square hole, a waist hole (oblong hole) or other strip holes, and the first fixing hole 201 and the second fixing hole 202 are both fixed and fixed. The first blind hole 101 on 100 cooperates.

The fixing screw 230 is configured to detachably fix the second adjusting member 200 to the fixing bracket 100. Specifically, one fixing screw 230 passes through the first fixing hole 201 and the first blind hole 101 corresponding to the first fixing hole 201 A corner plate 212 is fixed to the first side wall 120 of the fixing bracket 100. At the same time, a fixing screw 230 passes through the second fixing hole 202 and the first blind hole 101 corresponding to the second fixing hole 202 to fix the second gusset 213 to the second side wall 130 of the fixing bracket 100 as a preferred implementation. In a manner, when the fixing screw 230 fixes the second adjusting member 200, in order to facilitate the adjustment of the relative position of the second adjusting member 200 and the fixing bracket 100, the fixing screw 230 can be fastened with a low torque, that is, the fixing of the second adjusting member 200 is maintained. Under the premise of the state, but not fully tightened.

In the embodiment, the first fixing hole 201 and the second fixing hole 202 are both waist-shaped holes, and the length direction of the first fixing hole 201 and the length direction of the second fixing hole 202 are parallel to each other, and are perpendicular to the positioning groove 220. The direction of extension. Thus, when the fixing screw 230 passes through the first fixing hole 201 or the second fixing hole 202, the first fixing hole 201 or the second fixing hole 202 is not completely occupied. When the second adjusting member 200 is subjected to an external force, the second adjustment is performed. The member 200 can be displaced along the extending direction of the first fixing hole 201 and the second fixing hole 202 or parallel to the extending direction thereof.

The adjusting hole is used to adjust the relative position of the second adjusting member 200 and the fixing bracket 100 after the second adjusting member 200 is fixed to the fixing bracket 100. The adjustment hole is a strip hole. It should be understood that the strip hole can be configured as a through hole or a blind hole. In this embodiment, the adjustment hole is a through hole and is matched with the positioning hole 102.

Specifically, referring to FIG. 2, the adjustment hole includes a first adjustment hole 203 and a second adjustment hole 204. The first adjustment hole 203 and the second adjustment hole 204 are respectively disposed on the first gusset 212 and the second gusset 213. The longitudinal direction of the first adjustment hole 203 and the longitudinal direction of the second adjustment hole 204 are both parallel to the longitudinal direction of the positioning groove 220, wherein the "longitudinal direction" refers to the direction in which the adjustment hole extends.

The second adjusting member 200 has two second fixed contacts 240 separated from each other, that is, the two second fixed contacts 240 are not adjacent, and the second fixed contacts 240 are also used to contact the mirror 400 in use, and The angle of the mirror 400 can be adjusted by a change in the position of the second fixed contact 240, which together with the first fixed contact 301 form a three-contact adjustment structure.

In this embodiment, the two second fixed contacts 240 are connected to a resilient piece. Referring to FIG. 4, the second fixed contact 240 includes a holding member 241. The holding member 241 is fixed to the second adjusting member 200 by a screw connection. The two holding members 241 are spaced apart from each other. The holding member 241 has a card slot 242 for holding the mirror 400. The holding member 241 is connected to the second adjusting member 200, and the two card slots 242 are flush. The two latching members 241 are located on the same side of the second adjusting member 200. The openings of the latching slots 242 of the two latching members 241 are corresponding to the positioning slots 220 and are disposed toward the first adjusting member 300.

The adjusting rod 500 is matched with the adjusting hole and used to adjust the position of the second adjusting member 200. Referring to FIG. 3 and FIG. 4 together, the adjusting rod 500 has an eccentric shaft 501, and the eccentric shaft 501 and the positioning hole 102 disposed on the fixing bracket 100 In cooperation, the eccentric shaft 501 can pass through the adjustment hole and be inserted into the positioning hole 102.

With continued reference to FIG. 5, in the present embodiment, the adjustment rod 500 includes a first portion 510 and a second portion 520 that are connected to each other. The length of the first portion 510 is smaller than the length of the second portion 520, and the end portion and the second portion of the first portion 510. The ends of the 520 are each provided with an eccentric shaft 501. This arrangement can be such that both the first portion 510 and the second portion 520 can be used to adjust the second adjustment member 200, selectively operating using the first portion 510 or the second portion 520, depending on actual use requirements, while the first portion 510 The axis is substantially perpendicular to the axis of the second portion 520. When the first portion 510 is used for adjustment, the second portion 520 can be used as a handle to achieve a labor-saving effect. Similarly, when the second portion 520 is used for adjustment The first portion 510 can be used as a handle.

It should be understood that in other embodiments, the adjustment rod 500 may also employ other members having an eccentric structure, such as a rod-like body having a cam structure, and the second adjustment member 200 may also be adjusted.

The method of adjusting the relative position of the second adjusting member 200 and the fixing bracket 100 by the adjusting lever 500 is:

The eccentric shaft 501 of the adjusting rod 500 is inserted from the first adjusting hole 203 and passes through the first gusset 212 into the positioning hole 102. By rotating the adjusting rod 500, due to the structural design of the eccentric shaft 501 of the adjusting rod 500, the eccentric shaft 501 will When the cam-like movement is performed in the width direction of the first adjustment hole 203 and against the first adjustment hole 203, the second adjustment member 200 can be pushed in a direction perpendicular to the first adjustment hole 203. mobile. Similarly, the same effect can be achieved by using the adjustment lever 500 in the second adjustment hole 204. Thus, by adjusting the end of the mirror 400 in the direction of the first gusset 212 (hereinafter referred to as the left end) and the approach of the mirror 400, The opposite position of the one end of the first gusset 212 (hereinafter referred to as the right end) and the fixed bracket 100 can realize the angle adjustment of the mirror 400. For example, when the mirror 400 needs to be changed to the right angle, the left end is adjusted toward the mirror at this time. The front side of the 400 is moved, and the right end is adjusted to move right rearward of the mirror 400, and the operation is extremely simple.

Similarly, when the mirror 400 needs to be moved left and right (moving along the longitudinal direction of the first adjustment hole 203), the second adjustment member 200 can be tilted along the longitudinal direction of the first adjustment hole 203 using the adjustment lever 500.

In other embodiments, the length direction of the first adjustment hole 203 may also be non-parallel to the longitudinal direction of the second adjustment hole 204. At this time, the position adjustment effect on the second adjustment member 200 can also be achieved.

In some embodiments, the first adjustment hole 203 and/or the second adjustment hole 204 are waist-shaped holes (oblong holes), and the way of forming the waist holes can facilitate the processing of the second adjustment member 200.

Preferably, the projection of the first fixed contact 301 on the first adjusting member 300 on the fixing bracket 100 is between the projections of the two second fixed contacts 240 on the fixing bracket 100, and the two second fixed contacts 240 The line connecting the first fixed contact 301 forms an isosceles triangle. This arrangement can stabilize the fixed structure of the mirror 400, while the mirror 400 does not undergo large deflection when the left and/or right ends of the mirror 400 are adjusted. In some embodiments, the two second fixed contacts 240 are located on the center plate 211, and the two fixed contacts of the second adjusting member 200 are located between the first adjusting hole 203 and the second adjusting hole 204, so that When the adjustment hole 203 and the second adjustment hole 204 perform an adjustment operation, it is more sensitive that the mirror 400 rotates or moves around the two second fixed contacts 240.

The projector 10 provided in this embodiment is assembled by first mounting the first adjusting member 300 in the mounting groove 111, and then placing the mirror 400 into the installation space along the first sliding slot and the second sliding slot 131. Abutting the first fixed contact 301, the positioning slot 220 of the second adjusting member 200 is correspondingly positioned with the mirror 400 and fixed to the fixing bracket 100 by the fixing screw 230. At this time, the mirror 400 protrudes from the positioning slot 220. Then, the card slot 242 of the holding member 241 is caught on the mirror 400 and fixed to the second adjusting member 200 together with the elastic piece. Then, according to the use of the mirror 400, the position and angle of the mirror 400 are adjusted according to the aforementioned adjustment method. After the angle adjustment is completed, the fixing screw 230 can be dispensed and fixed.

The projector 10 provided in this embodiment can conveniently adjust the angle of the mirror 400 and the front and rear positions by using the mirror 400 adjusting mechanism, thereby greatly improving the use and assembly efficiency of the projector 10.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A mirror adjustment mechanism, comprising:

a mounting bracket for mounting the mirror;

a first adjusting member, the first adjusting member is provided with a first fixed contact, and the first adjusting member is connected to the fixing bracket;

a second adjusting member, the second adjusting member has two second fixed contacts separated from each other; the second adjusting member is provided with a fixing hole and an adjusting hole, the adjusting hole is a strip hole, and;

a fixing screw that cooperates with the fixing hole for detachably fixing the second adjusting member to the fixing bracket.
The mirror adjustment mechanism according to claim 1, wherein the adjustment hole comprises a first adjustment hole and a second adjustment hole, a length direction of the first adjustment hole and a length direction of the second adjustment hole parallel.
The mirror adjustment mechanism according to claim 2, wherein the two fixed contacts of the second adjustment member are located between the first adjustment hole and the second adjustment hole.
The mirror adjustment mechanism according to claim 2, wherein the first adjustment hole and/or the second adjustment hole are waist holes.
The mirror adjustment mechanism according to claim 1, wherein the second fixed contact comprises a holding member, the holding member has a card slot for holding the mirror, the card holder The piece is connected to the second adjusting member, and the two card slots are flush.
The mirror adjustment mechanism according to claim 5, wherein the second adjusting member is provided with a positioning groove, and the opening of the card slot corresponds to the positioning groove position.
The mirror adjustment mechanism according to claim 1, wherein the first fixed contact is a resilient cover.
The mirror adjustment mechanism according to any one of claims 1 to 7, further comprising an adjustment rod that cooperates with the adjustment hole, the adjustment rod has an eccentric shaft, and the fixing bracket is provided with a hinge The positioning hole of the eccentric shaft is matched.
The mirror adjustment mechanism according to claim 8, wherein the adjustment lever includes a first portion and a second portion that are connected to each other, and an end portion of the first portion and an end portion of the second portion are provided with The eccentric shaft.
A projection apparatus comprising a mirror and the mirror adjustment mechanism according to any one of claims 1-9.